butyltin tris(2-ethylhexanoate): a catalyst for urethane reactions in coatings introduction in the ever-evolving world of coatings and surface protection, chemistry plays a starring role. among the many chemical actors on this stage, butyltin tris(2-ethylhexanoate) — often abbreviated as bteh — has carved out a niche as a highly effective catalyst in urethane reactions. whether you’re...